Lathe.



No. 717,933. PATENTED JAN. 6, 1903. G. SEYMOUR.

LATHE.

APfI-IOATION FILED OUT. 18, 1902. HQ MODEL. 3 SHEETS-BHEE1 1.

INVE-NTOH J C'hm'ZesSe mour a/ I By l W 4% I ATTOHN No. 717,933. PATENTED JAN. 6, 1903.

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LATHE.

APPLICATION FILED OCT. 18,1902.

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No. 717,933. PATENTBD JAN. e, 1903.

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, LATHE. APPLICATION FILED OUT. 18, 1902.

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UNITE STATES ATENT' OFFIcE.

CHARLES SEYMOUR, OF DEF IANOE, OHIO, ASSIGNOR TO DEFIANOE MACHINE WORKS, OF DEFIANOE, OHIO.

LATHE.

SPECIFICATION forming part of Letters Patent No. 717,933, dated January 6, 1903. Application filed October 18, 1902. Serial No. 127,763. (No modem To an whom it may concern/.2

Be it known that I, CHARLES SEYMOUR, a citizen of the United States, and a resident of Defiance, in the county of Defiance and State,

granted to Peter Kettenring on June 10,1890. 4

The object of the invention is to provide a new and improved lathe more especially de-, signed for turning irregular formssuch as,

handles used in brushes, tools, and otherimplementsthe lathe being, arranged to turn the rough blank from end to end to form the handle complete and oval in cross-section and to finish'the handle with great accuracy and without the aid of skilled labor.

The invention consists of novel featuresand parts and combinations of the same, as will be more fully describedhereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the improvement. Fig. 2 is an enlarged sectional plan View of the improvement with the overhead cutter-head and the tail-stock omitted. Fig. 3 is a transverse section of the same on the line 3 3 of Fig. 2. Fig. 4 is a transverse section on the line 4 4 of Fig. 2 of the adjustable pivot for the table members. Fig. 5 is an inverted plan view of the pivot-plate. Fig. 6 is a side elevation of a handle finished by the machine. Fig. 7 is a cross-section of the same on the line 7 7 of Fig. 6, and Fig. 8 is a similar view of the same on the line 8 8 of Fig. 6.

On the bed A of the lathe is mounted a driven shaft B, carrying a cutter-head O for cutting a wooden blank D, held on a headcenter E and a tail-,centerF of which the-headand the lower table member is pivotally connected at H with a lever H, fulcrumed at H on the bed A, so that when the operator imparts a swinging motion to the lever H then the lower table member G is caused to slide transversely on the guideways A A and in doing so it carries the upper table member G along to bring the blank D in operative position relative to the cutter-head O.

The head-stock end of the upper table member G rests on and is mounted to slide transversely on a raised bearing G formed on the top of the lower member G of the table, and the said members G and G are pivotally connected with each other at about a point lying in a vertical transverse plane passing through the point of the tail-center F, as will be readily understood by reference to Figs. 2 and 4.

For pivotally connecting the table-sections with each other the following device is provided: On the table members G and G are bolted or otherwise secured transversely-extending sets of brackets I and I, of which the brackets I carry transversely-adjustable bolts I and similar bolts 1 are held on the brackets I, the said bolts passing through elongated slots I in the said brackets to allow of adjusting the bolts transversely, as will be readily understood by reference to Fig. 2. The lower ends of the bolts I support a lon gitudinally-extendiug bar J, and a similar bar J, located immediately below the bar J, is carried by the bolt 1 On the bars J and J are held longitudinally-adjustable pivotplates Kand K, respectively, (see Fig. 4,) adapted to be secured in position on the bars by suitable set-screws K and K and on the under side of the pivot-plate K is secured or center E is formed on a head-stock spindle formed a depending pivot K engaging a corresponding aperture in the plate K By adjusting the pivot-plates K and K lengthwise on the bars J and J it is evident that the pivot-pin K can be brought into the desired position relative to the free end of the tailcenter F so that the upper table member G swings from the lower table member G with the pivot-pin K as the fulcrum.

By having the bars J and J transversely adjustable on the brackets I and I by the bolts I l the vertical axis of the pivot-pin K can be brought in proper alinement with the centers-that is into a vertical plane extending through the axes of the centers E and F.

Now in order to impart a swinging motion to the upper table member G while the cutter-head C operates on the blank D it is necessary to fasten on the head-stock spindle E a templet or pattern L, of oval or elliptical form, (see Fig. 3,) which abuts against the inner face of a stock L, secured to the lower table member G and moving with the same when the lever H is actuated by the operator, aspreviouslymentioned. Thetempletorpattern L is held in contact wit-h the stock L by a spring N, secured at one end to the lower table member G and at its free end to a bar N, adjustably secured in a bearing N attached to the upper table member G. A setscrew N serves to hold the bar N in position in the bearing N and by adjusting the said bar N a desired tension can be given to the spring N.

In order to drive the head-stock spindle E slowly, the outer end of the same is provided with a bevel gear-wheel O, in mesh with a pinion O, secured on a transverse shaft 0 journaled at one end in suitable bearings 0 carried by the upper table member G, as plainly indicated in the drawings, and the other end of the said shaft is mounted to slide loosely in a bearing carried by the bed A.

On the shaft 0 is secured a drum 0 over which passes a belt 0 passing over a pulley O driven by pulleys P and P and belt from the shaft B, so that the head-stock spindle E is driven in unison with the shaft B only at an extremely lower rate of speed.

A11 auxiliary or second cutter-head Q is provided to turn and finish the eye end of the handle, and this cutterhead Q is held on a swinging frame R, having its shaft R mounted to turn in suitable bearings supported from the bed A. One end of the shaft R is provided with an arm R connected by a link R with a bracket R secured. to the lower table member G, as plainly indicated in Fig. 1, so that the swinging arm R swings up and down with the inward and outward movement of the lower table member G.

A spring S is connected with the swinging frame R to return the same to its normal uppermost position; but as the said swinging frame, its cutter-head, and the means for operating the same are substantially like those described in the Letters Patent above referred to it is not deemed necessary to further describe the same in detail.

The operation is as follows: When the blank D is in posit-ion on the centers E and F and a rotary motion is given to the shaft B and the operator imparts a transverse swinging motion to the lever H, and thereby moves the table members G and Ginwardly, then the blank D is acted on by the knives of the cutter-head G to turn the blank 'D according to the shape of the finished handlethat is, according to the shape of the knives on the cutter-head 0. It is understood that the blank D slowly revolves during the cutting operation and a transverse swinging motion is given at the same time to the upper table member G, which carries the blank D, to cause an oval turning of the said blank in such a manner that the portion at the tail-center F is but slightly oval, while the irregular form increases toward the head-center E, as the pivot K on which the upper table member G swings, is located directiy below the end of the tail-center F, as previously explained. Thus the blank D is turned into a handle or other article D, as indicated in Figs. 6, 7, and 8-that is, the inner end of the handle is but slightly oval and. the outer or palm portion of the handle is of pronounced oval form, as indicated in Fig. 8.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A lathe having a table formed of two members, of which one is mounted to swing on the other, the swinging member carrying a head-stock and a tail-stock, and means for pivotally connecting the members with each other, the axis of the pivot lying in a vertical plane extending through the axis of the head and tail stock centers, as set forth.

2. A lathe having a table formed of two members, of which one is mounted to swing on the other, the swinging member carrying a head-stock and a tail-stock, and means adjustable on the members for pivotally conmeeting the same with each other, the axis of the pivot lying in a vertical plane extending through the axis of the head and tail stock centers, as set forth.

- 3. A lathe having a table formed of two members, of which one is mounted to swing on the other, the swinging member carrying a head-stock and a tail-stock, means adjustable on the members for pivotally connecting the same with each other, the axis of the pivot lying in a vertical plane extending through the axis of the head-stock and tail-stock centers, and means for sliding the other member transversely, to feed the entire table toward or from the cutter-head of the lathe, as set forth.

4. A lathe having a table formed of an upper member and a lower member, of which the lower member is mounted to slide transversely on the lathe-bed and the upper memthe lower member, brackets carried by the said members, bars adjustably supported one above the other from the said brackets, pivotplates adjnstably held on the said bars, one of the plates having a pivot engaging an opening in the other plate, a stock carried by the lower member, a pattern carried on a headstock spindle, supported with a tail-stock on the upper member, and a spring pressing the said upper member, to hold the pattern in contact with the said stock, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES SEYMOUR.

Witnesses:

JOSEPH BAUER, GEORGE W. DEATRIGK. 

